Planar LC12 User Manual
Page 11
Title: Product Specification: LC12 High-Bright Monitor
Page 11 of 24
Document Number: 023-0284-01
Revision: A
Figure 6. TTL Allowable Signal Levels
4.2.2.1 Mode Detection
The polarity of incoming horizontal/vertical frequencies and synchronization pulses
define the video resolution being presented. Video modes are listed in Table 3.
Video Mode
Displayed
Image
Resolution
Scanning Frequency)
Sync Polarity
Horizonta
l (KHz)
Vertical
(Hz)
Horizonta
l
Vertical
IBM VGA
640 x 400
31.468
70
-
+
IBM VGA
640 x 480
31.468
60
-
-
IBM VGA
w/Border
656 x 496
31.468
60
-
-
IBM VGA
720 x 400
31.468
70
-
-
IBM VGA
w/Border
738 x 414
31.468
70
VESA
800 x 600
48.077
72
+
+
VESA
1024 x 768
56.48
70
-
-
Table 3. Video Mode Definitions
4.2.2.2 Color Display Detection
The video signal source determines which type of display is connected to it
based on the state of the Monitor Sense Lines. The Monitor will indicate to
the source that it is a "color display" when Monitor Sense Line 1 (Pin 11) is